Audio accessory



FIG. 1 is a perspective view of an audio accessory as seen from the back, top, and left side;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a back view thereof; and,

FIG. 7 is a front view thereof.

The broken lines depict portions of the audio accessory that from no part of the claimed design. 

CLAIM The ornamental design for an audio accessory, substantially as shown and described. 